
/*
     File: CoreDataBooksAppDelegate.m
 Abstract: Application delegate to set up the Core Data stack and configure the first view and navigation controllers.
  Version: 1.1
 
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 */

#import "CoreDataBooksAppDelegate.h"
#import "RootViewController.h"
#import "BookModelSync.h"

@implementation CoreDataBooksAppDelegate

@synthesize window;
@synthesize navigationController;


#pragma mark -
#pragma mark Application lifecycle

- (void)applicationDidFinishLaunching:(UIApplication *)application {

	RootViewController *rootViewController = (RootViewController *)[navigationController topViewController];
	rootViewController.managedObjectContext = self.managedObjectContext;
	
	// Configure and show the window
	[window addSubview:[navigationController view]];
	[window makeKeyAndVisible];
    
    sync = [[BookModelSync alloc] initWithremoteHost:@"booksengine.appspot.com"
                                           plistPath:@"plist"
                                managedObjectContext:[self managedObjectContext]];
    if(!authVC)
    {
        authVC = [[AuthenticationViewController alloc] initWithNibName:@"AuthenticationViewController" bundle:nil];
        [authVC setDelegate:self];
        [authVC setRemoteURL:@"https://booksengine.appspot.com"];
    }
    UINavigationController *throwAwayController = [[UINavigationController alloc] initWithRootViewController:authVC];
    [throwAwayController setNavigationBarHidden:NO animated:NO];
    [self.navigationController presentModalViewController:throwAwayController animated:YES];
    [throwAwayController release];
}


/**
 applicationWillTerminate: saves changes in the application's managed object context before the application terminates.
 */
- (void)applicationWillTerminate:(UIApplication *)application {
	
    NSError *error;
    if (managedObjectContext != nil) {
        if ([managedObjectContext hasChanges] && ![managedObjectContext save:&error]) {
			// Update to handle the error appropriately.
			NSLog(@"Unresolved error %@, %@", error, [error userInfo]);
			exit(-1);  // Fail
        } 
    }
}

#pragma mark -
#pragma mark AuthenticationViewControllerDelegate

-(void)authenticationViewControllerDidLogin:(AuthenticationViewController *)theAuthVC;
{
    [sync sync];
    [self.navigationController dismissModalViewControllerAnimated:YES];
    [authVC setDelegate:nil];
    [self setAuthVC:nil];
}

-(void)authenticationViewController:(AuthenticationViewController *)authVC didFailLoginWithErrorMessage:(NSString *)error;
{
    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Login Failed"
                                                    message:[NSString stringWithFormat:@"Authentication Failed with error:%@", error]
                                                   delegate:nil
                                          cancelButtonTitle:@"Okay"
                                          otherButtonTitles:nil];
    [alert show];
    [alert release];
}

#pragma mark -
#pragma mark Saving

/**
 Performs the save action for the application, which is to send the save:
 message to the application's managed object context.
 */
- (IBAction)saveAction:(id)sender {
	
    NSError *error;
    if (![[self managedObjectContext] save:&error]) {
		// Update to handle the error appropriately.
		NSLog(@"Unresolved error %@, %@", error, [error userInfo]);
		exit(-1);  // Fail
    }
}


#pragma mark -
#pragma mark Core Data stack

/**
 Returns the managed object context for the application.
 If the context doesn't already exist, it is created and bound to the persistent store coordinator for the application.
 */
- (NSManagedObjectContext *) managedObjectContext {
	
    if (managedObjectContext != nil) {
        return managedObjectContext;
    }
	
    NSPersistentStoreCoordinator *coordinator = [self persistentStoreCoordinator];
    if (coordinator != nil) {
        managedObjectContext = [[NSManagedObjectContext alloc] init];
        [managedObjectContext setPersistentStoreCoordinator: coordinator];
    }
    return managedObjectContext;
}


/**
 Returns the managed object model for the application.
 If the model doesn't already exist, it is created by merging all of the models found in the application bundle.
 */
- (NSManagedObjectModel *)managedObjectModel {
	
    if (managedObjectModel != nil) {
        return managedObjectModel;
    }
    managedObjectModel = [[NSManagedObjectModel mergedModelFromBundles:nil] retain];    
    return managedObjectModel;
}


/**
 Returns the persistent store coordinator for the application.
 If the coordinator doesn't already exist, it is created and the application's store added to it.
 */
- (NSPersistentStoreCoordinator *)persistentStoreCoordinator {
	
    if (persistentStoreCoordinator != nil) {
        return persistentStoreCoordinator;
    }
	
	NSString *storePath = [[self applicationDocumentsDirectory] stringByAppendingPathComponent: @"CoreDataBooks.sqlite"];
    
    //No defaut set of books for touchengine demo
//	/*
//	 Set up the store.
//	 For the sake of illustration, provide a pre-populated default store.
//	 */
//	NSFileManager *fileManager = [NSFileManager defaultManager];
//	// If the expected store doesn't exist, copy the default store.
//	if (![fileManager fileExistsAtPath:storePath]) {
//		NSString *defaultStorePath = [[NSBundle mainBundle] pathForResource:@"CoreDataBooks" ofType:@"sqlite"];
//		if (defaultStorePath) {
//			[fileManager copyItemAtPath:defaultStorePath toPath:storePath error:NULL];
//		}
//	}

	NSURL *storeUrl = [NSURL fileURLWithPath:storePath];
	
	NSDictionary *options = [NSDictionary dictionaryWithObjectsAndKeys:[NSNumber numberWithBool:YES], NSMigratePersistentStoresAutomaticallyOption, [NSNumber numberWithBool:YES], NSInferMappingModelAutomaticallyOption, nil];	
    persistentStoreCoordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel: [self managedObjectModel]];

	NSError *error;
	if (![persistentStoreCoordinator addPersistentStoreWithType:NSSQLiteStoreType configuration:nil URL:storeUrl options:options error:&error]) {
		// Update to handle the error appropriately.
		NSLog(@"Unresolved error %@, %@", error, [error userInfo]);
		exit(-1);  // Fail
    }    
	
    return persistentStoreCoordinator;
}


#pragma mark -
#pragma mark Application's documents directory

/**
 Returns the path to the application's documents directory.
 */
- (NSString *)applicationDocumentsDirectory {
	
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *basePath = ([paths count] > 0) ? [paths objectAtIndex:0] : nil;
    return basePath;
}


#pragma mark -
#pragma mark Memory management

@synthesize authVC;
- (void)dealloc {
	
    [authVC release]; authVC = nil;
    [managedObjectContext release]; managedObjectContext = nil;
    [managedObjectModel release]; managedObjectModel = nil;
    [persistentStoreCoordinator release]; persistentStoreCoordinator = nil;
    
	[navigationController release]; navigationController = nil;
	[window release]; window = nil;
    [sync release]; sync = nil;
	[super dealloc];
}


@end
